I was offended by Crash.
A mix of "I wasted money renting this garbage" and literally hating every part of it. Yes, the human race sucks, but not everyone in the world is a racist pig.
One of the few movies I turned off without finishing.
You are a smarter man than me
I stuck around to the bitter end. I mean.. it won Best Picture... It had to get better at some point..?!?!
I'd say in general though I don't really get 'offended' by movies. I might find them ridiculous and terrible for numerous reasons. But offended? Ok, well, I guess there was the Phantom Menace.. I mean that was offensive. But aside from that..? Nah.